Thank you for purchasing Grandstream Small Business IP phone GXP1610/GXP1610P/GXP1615/GXP1620/GXP1625/GXP1628/GXP1630. GXP16xx series is a next generation small-to-medium business IP phone:...

Overview All Grandstream products’ firmware are improved and updated on a regular basis. Latest firmware versions are available in http://www.grandstream.com/support/firmware...